Epitaxial Growth of High- Jc NdBa 2Cu 3O 7-δ Films on RABiTS by Pulsed Laser Deposition
Abstract
NdBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (NdBCO) films were grown on rolling-assisted biaxially textured substrates (RABiTS) via pulsed laser deposition. c-Axis-oriented epitaxial NdBCO films with high performance were obtained under optimal deposition conditions. Transmission electron microscopy analysis shows that the NdBCO film grown on RABiTS has a clear interface with a CeO{sub 2} cap layer and a nearly perfect lattice structure. The NdBCO film exhibits higher {Tc} of 93.7 K and better in-field J c in magnetic fields and at all field orientations, compared to pure YBCO films.
- Authors:
-
- ORNL
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- OE USDOE - Office of Electric Transmission and Distribution
- OSTI Identifier:
- 932000
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Conference
- Resource Relation:
- Conference: Materials Science and Technology 2006, Cincinnati, OH, USA, 20061015, 20061019
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; NEODYMIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; DEPOSITION; LASER RADIATION; PERFORMANCE; SUBSTRATES; CRYSTAL LATTICES; TRANSITION TEMPERATURE
Citation Formats
Wee, Sung Hun, Goyal, Amit, Li, Jing, Zhang, Yifei, and Heatherly Jr, Lee. Epitaxial Growth of High-Jc NdBa2Cu3O7-δ Films on RABiTS by Pulsed Laser Deposition. United States: N. p., 2007.
Web.
Wee, Sung Hun, Goyal, Amit, Li, Jing, Zhang, Yifei, & Heatherly Jr, Lee. Epitaxial Growth of High-Jc NdBa2Cu3O7-δ Films on RABiTS by Pulsed Laser Deposition. United States.
Wee, Sung Hun, Goyal, Amit, Li, Jing, Zhang, Yifei, and Heatherly Jr, Lee. Mon .
"Epitaxial Growth of High-Jc NdBa2Cu3O7-δ Films on RABiTS by Pulsed Laser Deposition". United States.
doi:.
@article{osti_932000,
title = {Epitaxial Growth of High-Jc NdBa2Cu3O7-δ Films on RABiTS by Pulsed Laser Deposition},
author = {Wee, Sung Hun and Goyal, Amit and Li, Jing and Zhang, Yifei and Heatherly Jr, Lee},
abstractNote = {NdBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (NdBCO) films were grown on rolling-assisted biaxially textured substrates (RABiTS) via pulsed laser deposition. c-Axis-oriented epitaxial NdBCO films with high performance were obtained under optimal deposition conditions. Transmission electron microscopy analysis shows that the NdBCO film grown on RABiTS has a clear interface with a CeO{sub 2} cap layer and a nearly perfect lattice structure. The NdBCO film exhibits higher {Tc} of 93.7 K and better in-field J c in magnetic fields and at all field orientations, compared to pure YBCO films.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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Pulsed laser deposition of thick YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] films with [ital J][sub [ital c]][ge]1 MA/cm[sup 2]
Using pulsed laser deposition, YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] (YBCO) films ranging in thickness from 0.065 to 6.4 [mu]m have been deposited on yttria-stabilized zirconia substrates with an intermediate layer of CeO[sub 2]. The thinnest films have critical current densities of over 5 MA/cm[sup 2] at 75 K with zero applied field; as film thickness is increased, [ital J][sub [ital c]] decreases asymptotically to 1 MA/cm[sup 2]. X-ray analysis of a 2.2-[mu]m-thick film shows that the YBCO is predominantly [ital c]-axis oriented and textured in-plane, while a Rutherford backscattering spectrometry minimum channeling yield of [approx]75% indicates that the film contains disorderedmore » -
Effect of columnar defects on the J[sub c] anisotropy of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin films and YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]/PrBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] multilayers
Epitaxial YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] thin films (YBCO) and YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]/PrBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] multilayers (Y/Pr) were irradiated with high-energy heavy ions (770) Mev [sup 108]Pb under various directions [phi] relative to the c-axis. The irradiation resulted in columnar defects tilted by [phi] from the c-axis. The angular dependence of their pinning activity was studied by measuring the anisotropy of the critical current density. The J[sub c](B, T, [theta]) behavior of the irradiated YBCO thin films showed an additional peak, which exceeds the intrinsic pinning peak, exactly at the irradiation direction. The Y/Pr multilayers, however, showed an isotropicmore » -
The Incorporation of Nanoscale Columnar Defects Comprised of Self-Assembled BaZrO 3 Nanodots to Improve Flux-Pinning and Critical Current Density of NdBa 2Cu 3O 7-δ Films Grown on RABiTS
We report significant enhancement in the flux-pinning of epitaxial NdBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (NdBCO) films on rolling-assisted biaxially textured substrates (RABiTS) via the incorporation of a two-dimensional array of columnar defects comprised of self-assembled BaZrO3 (BZO) nanodots. Pure NdBCO films and NdBCO films incorporating BZO nanodots, both with the same thickness of 0.6 {micro}m, were epitaxially grown on RABiTS by pulsed laser deposition. A very dense and homogeneous distribution of BZO nanodot columns with typical intercolumn spacing of around 15-20 nm oriented along the c-axis of the film was observed in the NdBCO+BZO film. Compared to the pure NBCO filmmore »